Amplifier
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Biasing Methods of Class A BJT Amplifiers When you want to design bipolar transistor circuits you need to know how to bias them. Biasing is applying electricity to a transistor in a specific way to make the transistor perform the way you want it to. There are mainly five classes of Amplifier - Class A, Class B, Class AB, Class C and Class D. In this article we will focus on biasing the transistor in a common emitter… |
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How to build an Analog Mixer - Additive Mixer and Multiplicative Mixer A mixer is a special type of electronic circuit that combines two signals (periodically repeating waveforms). Mixers find a lot of use in audio and RF systems and rarely used as simple analog ‘computers’. There are two types of Analog Audio Mixers - Additive Mixers and Multiplicative Mixers. 1. Additive Mixers Like their name suggests, additive mixers simply add… |
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Frequency Compensation of Op-amp and why it is important in your Op-Amp Circuits Operational Amplifiers or Op-Amps are considered the workhorse of Analog Electronic Designs. Back from the Analog computers era, Op-Amps have been used for mathematical operations with analog voltages, hence the name operational amplifier. To date, Op-Amps are extensively used for voltage comparison, differentiation, integration, summation and many other things. Needless to… |
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Howland Current Pump Circuit The simple current source is not perfect for variable loads as the current through load also changes with the load resistance. The solution for this problem is a Constant current source like Howland Current Pump Circuit. The Howland Current Pump was invented in 1962 by Professor Bradford Howland from MIT. It consists of an operational amplifier IC… |
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Arduino based Text to Speech (TTS) Converter Text-to-speech or TTS system converts normal text into Speech. This tech enables the system to speak out the text in a human voice. There are many examples of Text to Speech conversions like the announcements at public transport, the customer care calls, voice assistants in your smartphones, or the navigation menu of any machine. You can even find the TTS in Microsoft Word… |
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Current Mirror Circuit: Wilson and Widlar Current Mirroring Techniques In the previous article, we discussed about Current Mirror Circuit and how it can be built using a Transistor and a MOSFET. Even though a basic current mirror circuit can be constructed using two simple active components, BJTs and MOSFETs or using an amplifier circuit, the output is not perfect, as well as it has certain limitations and dependencies on the external factors.… |
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Simple Curve Tracer Circuit: Tracing the Curve for Resistor, Diode and Transistor Most of electronics deals with Tracing Curves, be it the characteristic transfer curve for a feedback loop, a resistor’s straight VI line or a transistor’s collector voltage versus current curve. These curves give us an intuitive understanding of how a device behaves in a circuit. An analytical approach might involve plugging in discrete… |
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Bootstrap Amplifier Circuit using Transistors Amplifiers are integral part of Electronics which are used to amplify low amplitude signals. Amplifier plays a very important role to boost the signal, specially in Audio and power electronics. We previously built many types of amplifiers including audio amplifiers, power amplifiers, operational amplifiers etc. Apart from them you can learn many other commonly used… |
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Operational Amplifier Integrator Circuit: Construction, Working and Applications Op-amp or Operational Amplifier is the backbone of Analog Electronics and out of many applications, such as Summing Amplifier, differential amplifier, Instrumentation Amplifier, Op-Amp can also be used as integrator which is a very useful circuit in analog related application. In simple Op-Amp applications, the output is proportional to… |
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What is JFET: Its Construction, Working and Biasing Techniques JFET is a Junction gate field-effect transistor. A normal transistor is a current-controlled device which needs current for biasing, whereas a JFET is a voltage-controlled device. Similar to MOSFETs, as we have seen in our previous tutorial, JFET has three terminals: Gate, Drain, and Source. JFET is an essential component for precision-level voltage… |
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Classes of Power Amplifiers In electronics, Amplifier is the most commonly used circuit device with huge application possibilities. In Audio related electronics pre-amplifier and power amplifiers are two different types of amplifier systems which are used for sound amplification related purposes. But, other than this application-specific purpose, there are huge differences in various types of… |
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Push-Pull Amplifier Circuit Circuit schematics are crucial for electronics engineers to understand. For the majority of real-world applications, Class A amplifiers offer the lowest distortion, Class B amplifiers the most efficiency, and Class AB amplifiers the best resolution. The particular needs for power, distortion, and efficiency will determine the choice. A push-pull… |
